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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
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Your Ride: 1993 325i
obd1
I was at a streetracing meet the other day, and there was a guy there with a 98 m3, which he had done alot of stuff to. He told me that he's got OBD2, and alot less can be done to it compared to my OBD1. Does anyone know what he meant?
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Your Ride: 1995 325i
Just a quick pass, but I think OBDII was meant to meet stricter emissions requirements, and frankly covered some parameters that OBDI didn't have to deal with. If I'm correct, II-equipped cars have two O2 sensors, not just one, so that's some indication that air-fuel mixtures and exhaust are being more closely monitored. If you want to pass state emissions tests, and avoid some serious legal consequences, don't mess with the setup.
what makes you say that? i think vanos is pretty cool, but i guess i don't have to deal with it in my E30.
haha, vanos ISNT cool(ive coem to realize this)
vanos actually cuts down the power of your engine at the low RPM, while the non-vanos motors have the same horsepower at the high end and a ton more torque and power at the low end, the only reason vanos does just that is to get better fuel economy
OBDII must pass an emission test as stated earlier, so you have to be very picky about exhaust upgrades and general internal engine upgrades because they can mess with the exhaust and emission output of the car
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Originally Posted by c1apton
I keep forgetting that - I have a great memory but it doesn't last long
OBDII firmware has to be reflashed on the existing ECU. Furthermore, there isn't much that can be changed compared to an OBDI. On OBDI cars, you can just swap in a chip with new firmware to squeeze out a lot more power than you can get from an OBDI.
Just to clarify: not all OBDI's are non-VANOS. BMW installed VANOS on all their E36's from 1993 onward.
05-30-2007, 04:36 PM
I keep forgetting that - I have a great memory but it doesn't last long
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